Subject: Re: Hopefully last dumb newbie question.
From: spec@vax2.concordia.ca (Mitchell Spector)
Date: Wed, Jun 24, 1998 22€53P EDT
Message-id: <24JUN199821534507@vax2.concordia.ca>

In article dempson@actrix.gen.nz (David Empson) writes...

>Willie Yeo <w.yeo@qut.edu.au> wrote:
> 
>> Mitchell Spector wrote:
>> 
>> >     Then this is definitely yet another glitch with this particular
>> > ROM 3 motherboard. The programmer CDA's and Alternate Display Mode
>> > are always flagged to 'on'. Perhaps I need to have someone write a
>> > an INIT that forces Alternate Display Mode to be disabled (just as
>> > was done for forcing the programmer CDA's out of my menu).
>> 
>>     Well ... in the later ROM 3s, the programmer CDA's default to 'on'
>> has been fixed. I know that for sure coz' I have one of those ROM 3s
>> without the programmer CDA enabled by default.
> 
>It is not a fault of early ROM 3 machines, just of some individual
>machines (Mitchell's is the only one I've heard about).

    I can confirm that my ROM 3 is not unique to this problem, I have
seen other machines which exhibit the problem (when I originally went
to complain about my ROM 3 glitches, I was invited to visit Apple HQ
in my area, where I was shown a machine _identical_ to mine).

   As well, when Jim Ferr lived in my area, he confirmed there were
indeed other ROM 3's floating around with this bug. Apparently a few
hundred or thousand went into production before the situtation was
corrected, but Apple made no recall since the problem was so minor.
If memory serves right, I bumped into someone on comp.sys.apple2
many years ago who had a ROM 3 like mine.

    The glitch, as far as I can tell, is that the two programmer CDA's
are always flagged to 'on' and will always be present in the Classic
Desk Accessories menu. System 6.0.1's SetStart Control Panel has no
affect, but I did get Jay Krell to write a small INIT which is called
"BadRom3Bit". It changes the value at location E1/017D from 'FF' to
'00' (this will clear the CDA's next time you warm-boot). Also, when
it first starts, it forces the GS to remove Visit Monitor and Memory
Peeker (as well as Alternate Display Mode) from the menu so you don't
have to reboot to get rid of them initially. Getting rid of A.D.M too
was Jay's idea, since I never used it.

    The issue with Alternative Display Mode always being active is a
completely new issue to me, I always thought it was active by default
on the ROM 3, until a couple of days ago. It sounds like this may be
yet another bug with this particular ROM 3.

Mitchell Spector
spec@vax2.concordia.ca